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Question 30815
JEE Physics · Hard

Elasticity, Thermal Expansion, Calorimetry and Heat Transfer: Young's Modulus MCQ

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Young's ModulusHardQuestion 30815

Question

Longitudinal strain in a wire is 0.002 and Young's modulus is 2×10¹¹ Pa. Stress in the wire is:
  1. A
    10⁸ Pa
  2. B
    2×10⁸ Pa
  3. C
    4×10⁸ Pa
    Correct
  4. D
    10¹¹ Pa

Correct answer

4×10⁸ Pa

Explanation

Stress = Y × strain = 2×10¹¹ × 0.002 = 4×10⁸ Pa.

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